34708-08-2

Basic information

• Product Name: 3-Thiocyanatopropyltriethoxysilane
• Synonyms: triethoxy(3-thiocyanatopropyl)silane;thiocyanicacid,3-(triethoxysilyl)propylester;3-THIOCYANATOPROPYLTRIETHOXYSILANE;3-THIOCYANOTOPROPYLTRIETHOXYSILANE;3-Thiocyanatopropyltriethoxysilan;-THIOCYANATOPROPYLTRIETHOXYSILANE;Si-264;Triethoxy(3-thiocyanatopropyl)
• CAS NO: 34708-08-2
• Molecular Formula: C₁₀H₂₁NO₃SSi
• Molecular Weight: 263.43
• EINECS: 252-161-3
• Product Categories: Adhesion Promoters;Coupling Agents;Surface Modifiers;Thiocyanato Silanes
• Mol File: 34708-08-2.mol

Chemical Properties

• Melting Point: <0°C
• Boiling Point: 95 °C
• Flash Point: 112°C
• Appearance: Straw to yellowish liquid with mild odor
• Density: 1.03
• Vapor Pressure: 0.00119mmHg at 25°C
• Refractive Index: 1.446
• Water Solubility: 140-1000000mg/L at 20℃
• CAS DataBase Reference: 3-Thiocyanatopropyltriethoxysilane(CAS DataBase Reference)
• NIST Chemistry Reference: 3-Thiocyanatopropyltriethoxysilane(34708-08-2)
• EPA Substance Registry System: 3-Thiocyanatopropyltriethoxysilane(34708-08-2)

Safety Data

• Hazard Codes: Xn
• Statements: 20/21/22-36/37/38-52/53-22
• Safety Statements: 26-36/37/39-61
• TSCA: No
• Hazardous Substances Data: 34708-08-2(Hazardous Substances Data)

Usage

Uses

Used in Rubber Industry:
3-Thiocyanatopropyltriethoxysilane is used as a reinforcing agent for rubber compounds to enhance the reinforcing properties of fillers containing hydroxyl groups. This leads to improved physical and mechanical properties of vulcanizates, including increased tensile strength, tearing strength, and abrasive resistance, as well as reduced compression set.
Furthermore, 3-Thiocyanatopropyltriethoxysilane is used as a processing aid in the rubber industry to reduce the viscosity of rubber compounds, thereby improving the processability of rubber products. This results in more efficient manufacturing processes and better overall product quality.

Flammability and Explosibility

Notclassified

InChI:InChI=1/C10H21NO3SSi/c1-4-12-16(13-5-2,14-6-3)9-7-8-15-10-11/h4-9H2,1-3H3

Upstream product

• 5089-70-3 (3-chloropropyl)triethoxysilane 
• 540-72-7 sodium thiocyanide 
• 333-20-0 potassium thioacyanate 

Relevant articles and documents

Acyl iodides in organic synthesis. Reactions of acetyl iodide with urea, thiourea, and their N,N′-disubstituted derivatives

Acetyl iodide reacted with urea and its derivatives to give the corresponding N-substituted products. The reactions of acetyl iodide with thiourea, N,N′-dimethylthiourea, imidazolidine-2-thione, and hexahydropyrimidine-2-thione resulted in the formation o

A cyano group Trialkoxysilanes synthetic method

The invention relates to a synthetic method of thiocyano propyl trialkoxysilane, which belongs to the field of organic chemistry. According to the invention, a self-made catalyst is employed, chloropropyltrialkoxysilane and sodium sulfocyanate are used for synthesis of thiocyano propyl trialkoxysilane and common salt under certain reaction condition, filter residue of common salt can be filtered and separated, the filter residue is washed by a corresponding alcoholic solution, the washing lotion recovers the corresponding alcohol under normal pressure, and is distilled with crude product to obtain the thiocyano propyl trialkoxysilane product. The thiocyano propyl trialkoxysilane product has the characteristics of high quality, good stability, little impurity, no waste material discharge, no environmental pollution, and easy industrial production.

PROCESS FOR PREPARATION OF THIOCYANATO[!MINUS!]BEARING ORGANOALKOXYSILANES

A process for the preparation of (D) thiocyanato-bearing organoalkoxysi lanes represented by the general formula (3) NCS-R1-Si(OR2)nR33-n (where R1 is a divalent hydrocarbon group having 1 to 6 carbon atoms, R2 and R3 are monovalent hydrocarbon groups, and the subscript n is 0 to 3), in which (A) a thiocyanic acid salt represented by the general formula (1) MSCN (where M stands for an alkali metal) and (B) a halogenated alkylalkoxysilane represented by the general formula (2) XR1Si(OR2)nR33-n (where X is a halogen atom, and R1, R2, R3, and the subscript n are the same as above) are reacted in the presence of (C) a phase transfer catalyst.